Scraper



Oct. 4, 1927. 1,644,252

J. s. HousMAN SCRAPER Original Filed Sept. 30. 1921 y /Nyf/vro/a: /2 4 JOHN HouSMA/v ATTORNEY lll " wall portions 17 Patented Oizt. 4, 1927.

UNITED sT-.grlas PATENT 'oF/FICE.

JOHN S. I-IOUSMAN, OF CHICAGO,.ILLINOIS, ASSIGNOR T0 GOODMAN MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS,'A CORPORATION OF ILLINOIS.

SCRAPER.

Application filed September 30, 1921, Serial No. 504,443. Renewed March 28, 1927.

rearward movement to gather the load', and

closed during the forward movement.

vThe object of my invention is to provide means for loosening material and loadinfY the scraper of theV cla-ss above describe The invention may best be understood by reference to the accompanying drawing,

which illustrates the use of my` device as applied to kone form of open-endv scraper which is similar to that disclosed in a copending application of Glenn 1V.' Packer, Serial No. 470,771, filed May 19, 1921, nowk Patent 1,465,456, Aug. 21, 1923, and assigned to assignees of the present application.

In the drawing, Figure 1 is a top'plan view of the scraper to which my invention has been applied with part-s broken away.

Fig. 2 is a longitudinal cross-section of the scraper. Fig. 3 is a view showing` the scraper in use in a mine V,and illustrating the purpose of my invention.

This form of scraper illustrated comprises a body portion 12 having side walls 13, 13, connected by front and rear cross members 14 and 15 respectively. The rear end of the scraper is provided with a pairl of pivoted 17, arranged to form a closure, but mounted to swing rearwardly and laterally into substantial alignment with the side walls during the rearward movement of the scraper so as to load the sam-e. The scraper is operated by means of a head rope 1() and a tail rop-e 11 trained over fixed guides or Asheaves and operatively connected to any suitable power device such as a hoisting engine. Means coacting with the draft ropes for actuating the rear wall portions 17, 17 comprises a pair of liexible terminals a, 10a, connected to the head rope 10, and a pair of flexible terminals 11, 11a, connected to the tail rope 11. The terminals 10a, 10a, are each trained through a' .suitable guide 26 adjacent the front end of a side wall 13, and fromthence to a supporting member 27 attached to and extending inwardly from each wall portion 17. Suitable stop members 19 and22 are connected its respective wall portion.

above the supporting member 27, said stop members being adapted to engage the cross member 15 to limit the inward ymovement of movement of the walls may be limited by means of a pair of members 22 pivoted on arms 20 and extending through an angle member 22ar -securedto the bottom ofl crossb'ar 15. The extreme forward ends of the stop members 22 are bentdownwardly to engage the angle bar 228L when the wall portions 17, 17 are in their extreme outermost positions, vas shown in dotted lines in FigureV 1. It will now be seen that when the scraper is pull-ed 'rearwardly by means of the tail rope 11 the end wall portions 17, 17 swing outwardly into substantial alignment with the side walls13, 13. The scraper may thusbe pulled into a pile of material as illustrated in Fig. 3. When the tail rope is released and the head rope 10 is pulled, the end wall portions 17, 17, are swung inv wardly andclosed, so that theloose material within the scraper is carried forwardly away-from the pile. f Y i Referring now tothe features and objects of my present invention, it will be observed that I vprovide thev scraper with means projecting rearwardly above the opening thereof, which means is adapted to engage and loosen the adjacent material so that it will readily be dislodged from the pile and fall into the scraper. In the embodiment of my invention as illustrated, this means comrI`he outward prises a plurality of pick members 30, 30,

three in number mounted on the cross members 14 and 15 and extending rearwardly,

above th-e wall portions 17 17 in position to engage the loose material as shown. These pick members are preferably provided with slots 31, 31, having clamping members 32, 32, extending therethrough so as to permit longitudinal adjustment of said members.

It is usually desirable that the pick members extend rearwardly beyond the limit of movement of the side Walls 17 17 as shown in Fig. 1, but said pick members may be readily retracted from this position i desired as illustrated in dotted lines in Fig. 1. The operation of my device is illustrated in Fig. 3, which shows the scraper in digging position at the toe of a pile of loose material indicated at 33. The scraper is pulled into the pile by means of the Atailrope 11'vv'ith` end @Wall portions "17, 17, inf'` opened position vso as to readily enter the pile to obtain its load. The material is loaded into the scraper asthe latter'is moved rearwardly into the pile, vand When 'the movement is reversed, by pulling on the` head rope 10, the end Wall portions 17, 17 are closed .so as to carry the load forwardly. p Sometimesit is not possible to obtain a suffici-entdoad lin, one y rearward movement, and in'suh `case the'scraperis moved backward andA forayard. several times to yobtain afull load. 'At alley-ent@ 'as lthe toe of the pile is dimi1iislied,fthe incline-ofthe face becomes 'quitersteepMandthe inaterialis often packed sosollidlyv that it is necessaryv to dislodge the loosematerial in forder toxload',V the scraper readily. Bynmeans 'of the pick` members 80, y30, it will be seen lthat the .mia-,7

terial will be dislodged andfall in loose condition so `that it v.may be readily gathered in [the5 sorapen Under ordinary conditions y the scraper maintains its, normal relation yparallel to thegrund asshown in fully lines in Fig. 3, but Ihave noticed thatv sometimeshthe scraperis tipped upwardly, somewhat as inf, dicated inldottedlines injthis `ligure. ,1 The, tipping may be caused either by: reason o fl the 'arrangementof the tail rope which; often is inclined;upwardly as shown in 'nF ig. 3, or by reason-of ythe, fact tthat, they forwardly eX-y; tending cutting :edges offthe end wall por; tionsl 17, 17,vsoinketlimesl meet sufficient/Are#V s isttance'at they bottom ofthe inclined toteofl Y the pile to tip the scraperslightly as shown.

I indlthatplwhen 5the scraper has a tendency to tip up\fvardly, as describccL-the.pick mem.` bers 3Q, 30, tend tolcounteraet this*tendency1 astheyengage the inolinedlfacc ofthe vpile serving .toistziibilizeI the movement; ofthe scraper While it is being loaded.` Although I have shown aliddescribedone, formp'inuwliich my rinvention may be embodied, it will understood that many other means may be employed .for accomplishing the same results Without departing from'the spirit and scope of my invention.

I do not therefore Wish to be understood as limiting myself to the specific construction illustrated herein excepting as specilically vlimited in the appended claims.

I. claim as my invention: n

1'. Incombination with a scraper yof the Classl deseribed, means between the: lateral marginsl and above the, body ,of itliescraper,

extending AV in ,advance thereof, for dislodg-- ing loqseymaterial. K

v2. In `combination with areciprocably operated I scraper having one fendthereof provided `with a 7nim/able closure radapted to be .opened yvhileloadng v a. piclg'member fixed 'to thescraper and projecting longitudinally .beyondy islaidrclosure for; dislodging. A:loose material .during theloaxding of .the scraper.

3. In combination ,with a scraperihaving pivotalend Wall portions movable intosubstantially parallel relation .with `each other when in Iopen` position, means jor, mowing said )yall portions, and aplurality .of pick members fixed toithescraper and ,extending above `said Wall.- pontions, substantially in alignment [with the marginal .limits of .the latteruwhen infopen.Y position.

L In combination With a scraper having pivetalfend WallI portions movable, into substantially' parallelfjijelation .with each other when ,inopen positlonpmeans,for moving said wall portions,I a pluralityofpick mem-V tember, .1921. I

' l .JOHN S4 HOIISMAY.` 

